// pages/familyFeast/detail.js
const app = getApp();
var topOpacity = 0;
Page({

  /**
   * 页面的初始数据
   */
  data: {
    // 组件参数设置，传递到组件
    defaultData: {
      title: "", // 导航栏标题
      showHome: false, //是否显示回到首页按钮
      showBack: true, //是否显示返回按钮
      showLogo: false, //是否显示logo
      bgColor: 'transparent'
    },
    baseUrl: app.baseUrl,
    version: app.globalData.version,
    navBarHeight: app.globalData.navBarHeight,
    currentTab1: 0, //预设当前项的值
    bigFoodList:[],
    //商品介绍图
    img_path_js:'',

    openid:'',
    shareTitle:'',
    shareImg:'',
    id:0
  },
  onPageScroll(t) {
    if (t.scrollTop < 40) {
      topOpacity = 0
      if (this.data.topOpacity != 0) {
        this.setData({
          topOpacity: 0
        })
      }
    } else if (t.scrollTop >= 40) {
      if (topOpacity <= 1) {
        topOpacity = t.scrollTop / 100 - .4
      } else {
        topOpacity = 1
      }
      if (topOpacity <= 1) {
        this.setData({
          topOpacity: topOpacity
        })
      }
    }
  },
    // 滚动切换标签样式
    switchTab1: function (e) {
      this.setData({
        currentTab1: e.detail.current,
      });
    },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad(options) {
    var that=this;

    //获取菜品id
    var id = options.id;
    if(id==''||id==undefined){
      app.showTip('抱歉,未获取到菜品id哦');
      setTimeout(function(){
        wx.navigateBack({
          delta: 1
        });
      });
      return;
    }else{
      that.setData({
        id:id
      });
    }

     //获取缓存中的openid
    var openid = wx.getStorageSync('ly24_openid');

    if (openid == '') {
      //缓存中没有openid
      //获取所需页面信息
      wx.login({
        success: function (res) {
          if (res.code) {
            //发起网络请求
            wx.request({
              url: that.data.baseUrl + 'getOpenid.php',
              method: 'POST',
              data: {
                'code': res.code
              },
              header: {
                'content-type': 'application/x-www-form-urlencoded'
              },
              success: function (res) {
                //缓存微信openid
                wx.setStorageSync('ly24_openid', res.data.openid);
                that.setData({
                  openid: res.data.openid
                });

                //获取本页数据
                that.getFamilyFeastDetailPageInfo(res.data.openid, id);
              },
              fail: function (res) {}
            });
          }
        }
      });
    } else {
      that.setData({
        openid: openid
      });

      //获取本页数据
      that.getFamilyFeastDetailPageInfo(openid, id);
    }

    //调用分享
    that.getShareInfo();
  },

  //获取本页数据
  getFamilyFeastDetailPageInfo(openid, id){
    var that = this;

    wx.showLoading({
      title: '数据加载中...'
    });

    wx.request({
      url: that.data.baseUrl + 'getFamilyFeastDetailPageInfo.php',
      method: 'POST',
      data: {
        openid: openid,
        id: id
      },
      header: {
        'content-type': 'application/x-www-form-urlencoded'
      },
      success: function (res) {
        wx.hideLoading();
        if (res.data.status == 1) {
          //后台请求成功
          that.setData({
            bigFoodList: res.data.bigFoodList,
            img_path_js:res.data.img_path_js,
            ['defaultData.title']:res.data.food_name
          })
        } else {
          //后台请求失败
          app.showTip(res.data.msg);
          setTimeout(function () {
            wx.navigateBack({
              delta: 1
            });
          }, 2000);
          return;
        }
      },
      fail: function (res) {
        wx.hideLoading();
        app.showTip('服务器繁忙,请稍候重试');
        setTimeout(function () {
          wx.navigateBack({
            delta: 1
          });
        }, 2000);
        return;
      }
    });
  },

    //获取微信分享信息
  getShareInfo() {
    var that = this;
    wx.request({
      url: that.data.baseUrl + 'getShareInfo_order.php',
      method: 'POST',
      data: {},
      header: {
        'content-type': 'application/x-www-form-urlencoded'
      },
      success: function (res) {
        that.setData({
          shareTitle: res.data.shareTitle,
          shareImg: res.data.shareImg
        });
      },
      fail: function (res) {}
    });
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady() {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow() {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide() {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload() {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh() {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom() {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage() {
    var that = this;
    return {
      title: that.data.shareTitle,
      path: '/pages/familyFeast/index',
      imageUrl: that.data.shareImg,
      success: function (res) {

      },
      fail: function (res) {

      }
    }
  }
})